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A platform for research: civil engineering, architecture and urbanism
Low-shrinkage concrete for prefabricated parts and preparation method of low-shrinkage concrete
The invention relates to the technical field of concrete preparation, in particular to low-shrinkage concrete for a prefabricated part and a preparation method of the low-shrinkage concrete. The low-shrinkage concrete for the prefabricated part is prepared from the following raw materials in parts by mass: 50 to 60 parts of volcanic ash cement, 300 to 360 parts of Portland cement, 20 to 25 parts of waste hard plastic particles, 300 to 350 parts of sand, 200 to 300 parts of broken stone, 200 to 250 parts of recycled aggregate, 300 to 350 parts of modified mineral powder, 10.5 to 11.6 parts of admixture and 180 to 230 parts of water, the recycled aggregate is a composition prepared from fly ash recycled aggregate, reinforced concrete waste recycled aggregate and crushed concrete recycled aggregate according to the mass ratio of 5: (2-3): (3-4), the low-shrinkage concrete is prepared, and the mechanical strength of the concrete can be guaranteed while the concrete can be prevented from cracking. Therefore, the low-shrinkage concrete is more suitable for production of prefabricated parts.
本申请涉及混凝土制备技术领域，尤其涉及一种用于预制构件的低收缩混凝土及其制备方法。一种用于预制构件的低收缩混凝土，包括以下质量份数的原料：火山灰水泥50‑60份、硅酸盐水泥300‑360份、废弃硬质塑料颗粒20‑25份、砂300‑350份、碎石200‑300份、再生骨料200‑250份、改性矿粉300‑350份、外加剂10.5‑11.6份、水180‑230份，其中，所述再生骨料为粉煤灰再生骨料、钢筋混凝土废弃料再生骨料、破碎混凝土再生骨料按照质量比5:2‑3:3‑4的组合物，制得一种的低收缩混凝土，能够阻止混凝土产生裂缝的同时保证混凝土的机械强度，使得低收缩混凝土更适用于预制构件的生产。
Low-shrinkage concrete for prefabricated parts and preparation method of low-shrinkage concrete
The invention relates to the technical field of concrete preparation, in particular to low-shrinkage concrete for a prefabricated part and a preparation method of the low-shrinkage concrete. The low-shrinkage concrete for the prefabricated part is prepared from the following raw materials in parts by mass: 50 to 60 parts of volcanic ash cement, 300 to 360 parts of Portland cement, 20 to 25 parts of waste hard plastic particles, 300 to 350 parts of sand, 200 to 300 parts of broken stone, 200 to 250 parts of recycled aggregate, 300 to 350 parts of modified mineral powder, 10.5 to 11.6 parts of admixture and 180 to 230 parts of water, the recycled aggregate is a composition prepared from fly ash recycled aggregate, reinforced concrete waste recycled aggregate and crushed concrete recycled aggregate according to the mass ratio of 5: (2-3): (3-4), the low-shrinkage concrete is prepared, and the mechanical strength of the concrete can be guaranteed while the concrete can be prevented from cracking. Therefore, the low-shrinkage concrete is more suitable for production of prefabricated parts.
本申请涉及混凝土制备技术领域，尤其涉及一种用于预制构件的低收缩混凝土及其制备方法。一种用于预制构件的低收缩混凝土，包括以下质量份数的原料：火山灰水泥50‑60份、硅酸盐水泥300‑360份、废弃硬质塑料颗粒20‑25份、砂300‑350份、碎石200‑300份、再生骨料200‑250份、改性矿粉300‑350份、外加剂10.5‑11.6份、水180‑230份，其中，所述再生骨料为粉煤灰再生骨料、钢筋混凝土废弃料再生骨料、破碎混凝土再生骨料按照质量比5:2‑3:3‑4的组合物，制得一种的低收缩混凝土，能够阻止混凝土产生裂缝的同时保证混凝土的机械强度，使得低收缩混凝土更适用于预制构件的生产。
Low-shrinkage concrete for prefabricated parts and preparation method of low-shrinkage concrete
一种用于预制构件的低收缩混凝土及其制备方法
CHEN GUIBO (author) / WANG CONGYI (author) / WANG HONGHAI (author)
2023-10-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2021
| British Library Conference Proceedings | 2002